[_ks3e]

The author mentions that he would design a system with a continuously monitored pulse oximeter that could trigger the EPS descent mode automatically. Do wrist-mounted versions (fingertip ones would probably be too bulky/uncomfortable for continuous use by someone at the controls) of such continuous oximeters exist at the moment? The Apple Watch apparently has a sensor capable of measuring blood oxygen content, but disabled that functionality for unstated reasons (FDA regs?) [1], and I'm unaware of any extant wrist-worn device with that functionality enabled.

[1] https://9to5mac.com/2015/04/24/apple-watch-blood-oxygen/

Some more information about the physiology of hypoxia can be found here: https://web.archive.org/web/20150318011408/dr-amy.com/rich/o...

[durandal1]

Autopilot descent triggered by hypoxia alarm has been available for quite a while. It uses responsiveness heuristics rather than oximeter input.

https://www.aviationpros.com/press_release/10393999/cirrus-a...

[nradov]

The Garmin Fenix has a pulse oximeter.

https://www8.garmin.com/manuals/webhelp/fenix5plus/EN-US/GUI...